Bed and cylinder printing press



Nov. 8, 1932. c, COTTRELL, 313 1,886,529

BED AND CYLINDER PRINTING PRESS Filed May 12, 1931 5 Sheets-Sheet l llllilllllf" INVENTOR ATTORNEYS Nov. 8, 1932. QB. COTTRELL, 3D

BED AND CYLINDER PRINTING PRESS Filed May 12, 1931 3 Sheets-Sheet 2 INVENTOR ATTORNEYS Nov. 8, 1932. c. B. COTTRELL, 3D 1,886,529

BED AND CYLINDER PRINTING PRESS Filed May 12, 1931 I5 Sheets-Sheet 3 INVENTOR r 7W 21 M I ATTORNEYS Patented Nov. 8, 1932 UNITED STATES PATENT. OFFICE CALVERT B. COTTRELL, 31), OF WESTERLY, RHODE ISLAND, ASSIGNOR TO C. B. COTTRELL & SONS COMPANY, OF WESTERLY, RHODE ISLAND, A CORPORATION DELAWARE BED AND cYLnvnna PRINTIN Panes cylinder being operable on each stroke, to

successively take, print and deliver two sheets. Y 1.

My invention more particularly comprises a bed and cylinder printing press having two inking mechanisms, two pairs of opposed sheet feeders and a pair of opposed deliveries, all coacting to feed, print and deliver two sheets for each stroke of the impression cylinder, the sheet feeders being arranged in upper and lower pairs, the first sheet on each stroke being fed to the upper side of the cyl inder and the second sheet on each stroke being fed to the under side of the cylinder and one delivery being operable to take the first and second printed sheets on one stroke of the cylinder and the other delivery being operable to take the firstand second sheets on the opposite stroke of the impression cylinder.

My invention further comprises a bed and cylinder printing press in which the ,.reeiprocating bed carries two forms which coact with two sheet impression surfaces on the coacting impression cylinder.

My invention still further comprises means for alternately raising and lowering the two inking mechanisms whereby their form rollers may be driven continuously in one direction, one inkingmechanism being operable for inking the forms on one stroke of. the bed and the other. inking mechanism being operable for inking the forms on the opposite stroke of the bed.

A practical embodiment of my invention is represented in the accompanying drawings in which:

Fig. 1 represents a detail side elevation of my improved bed and cylinder printing press, the parts being in the posltions they assume when the bed and cylinder have proceeded' on their right. hand stroke (as the drawings are viewed) until the right hand form is about to print on the sheet which was fed from'the upperright hand feeder, the form rollers of the left-hand inking mechanism. being lowered into position to contact 7 with the forms and the formrollers of the right hand inking mechanism being raised out of position to contact with said forms as the bed proceeds to the limit. of its right hand movement; the position of-the form bed as it approaches said right. hand limit being shown in dotted lines;

.Fig. 2 represents an enlarged detail view of one of the tumbler gripperopening pins and itsladjace'ntparts; fl

Fig. 3 represents an enlarged detail view showing one of the pin operating cams on the formbed;, .1 Fig. 4 represents a detail diagram showing the relative positions of the several parts as'the form bedreaches-the limit of its'left hand stroke and is. about to start on its'right hand stroke; Fig. 5 represents asimilar view showing the relative positions of the parts in the right hand stroke of the bed as the sheet taken-from the upper right hand feeder is-about to be printed by the right hand'form the impres sion cylinder having rotated about one-half of a-revolution;

Fig. 6 represents a similar view showing the relative positions of the parts in the right hand stroke of the bed as the next succeeding sheet taken from the lower left hand feeder is about to be'printed 'by the left'hand form and thepreced-ing printed sheet is being transferred to its right hand delivery; the impres sion cylinder having' rotated one revolution; Fig. 7 represents a similar View showing the relative positions of the parts'in the right hand stroke of the bed as the second sheet is being transferred to its right-hand delivery; the impression cylinder having rotated'one and one-half revolutions;

Fig. 8 represents a similar view showing the relative positions of the parts as the bed and'cylinder reach the limit of their right samey" closed to take thelfirst v right hand feeder;

hand stroke; the cylinder having rotated slightly more than two revolutions;

Fig. 9 represents a similar view showing the relative positions of the parts in the left hand stroke of the bed as the third sheet which was taken from the upper left hand feeder is about'to'be printed by the left hand form;

the impression cylinder having rotated about one-half ofarevolution; V

FigJlOrepr'esents a similar view showing the relative positions of the parts in the left" hand stroke of the bed as the next succeeding sheet taken from the lower right hand feeder is about to be printed by the right hand form and thepreceding printed sheet is being transa ferred to its left hand delivery; the impressioncylinder having rotated about one revolution;- F a I a 11 represents a similar view showing the relativepositions of'the parts in the left handstroke of the bed as the sheet taken from the'lower right hand feeder is being delivered to its left hand delivery the impression cylinder having rotated one and one-half revolutions, I 7

. Fig. 12 represents a detail side'elevation p artly in diagram with the bed about midway of its stroke, this view more particularly" sheet to its right handdelivery;

Fig. 16 represents a'simil'ar view showing the relative positions of theparts as the next v set of grippers are closed to take the succeeding sheet from the lower left hand feeder;

Fig. 17 represents a similarview showing 7 p the relative positions of the severalparts as the grippers are opened to transfer the second printed sheet. to its right hand delivery.

- The reciprocating form bedis denoted by 1 and its two longitudinally arranged forms by 2 suitable means, .not' shown';herein.-

Two inking mechan sms are provided, one

for inking the forms on the right hand stroke of the bed and the other for inking the forms on the. left hand "stroke of the beds Each inkingmechanism comprises an ink fountain l, distributing rollers 5, form rollers; 6 and anelectric motor 7 which motor is independent of, the bedreciprocating means and drives-.boththe distributing rollers and-the 7 form rollers continuously; in one direction, to I ensure an eveniapplication of the ink to the represents a detail plan view offthe 3. This bed may be reciprocated by any forms 2 and 3. Any suitable means may be provided for lowering the form rollers 6 of the left hand inking mechanism into position to ink the forms 2 and 3 on the right hand stroke of the bed and for'raising the 3].,

formrollers out, of position to contact with said forms on the left hand stroke 'of the bed, said means in the present instance including a cam plate .8. with yielding oppositely disposed end members 9, and10. Simi-.

la'rly, any suitable means may be provided for lowering the form rollers of the right hand inking mechanism into position to con tact withthe forms 2 and 3 on the left hand 1 stroke of the bedand for raising the said form rollers outof position to Contact with said forms on the right hand stroke of the bed,said mechanism in the present instance including a cam plate 11 'withyielding oppositely disposed end members 12 and 13.-

"The oscillating impression cylinder 1% is geared at all times to the reciprocating bed '1 throu h'the usual ear and rack connect-ion 15, 16. The movement of the bed is suflicient to rotate the impression cylinder substantially two'revolutions in each direction.

This oscillatlng impression cylinder; is provided with "two "diametrically opposed sets of tumbler actuated grippers 1'7 18 for taking, printing and transferring ewe sheets on one strokeof the impression cylinder and two" diametrically opposed sets-of tumbler actuated grippers19 and- 2O for taking, print ing'and transferring two sheets on th'e'op- H posite; stroke or the impression cylinder. The adjacent oppositely directed grippers 17 and 19 are arranged to'take sheets at the propertimes fromtwo opposed "sheet feeders 21, 22 at the upper-side of the impression cylinder and the adjacent oppositely direct- 1' edgrippers 18 and 20 are arranged to take sheets at the proper times from two opposed sheet feeders 23, 24 at the lower side of the impression cylinder. Two opposed sheet deliveries 25 and 26 are'provided, the righthand sheet delivery 25 being arranged to take the printed sheets from the grippers 17 and 18 respectivelyon the'righthand stroke of the bed and the left hand sheet delivery26 being arranged to take the printed sheets from the grippers 19 and 20 upon the left hand strokeof the bed.-

be operated in the usual manner from the reciprocating bed by means notshown herein. The sheet strippers 31, 32 for the right and left hand deliveries 25 and 26 may beoperated from'the reciprocating bed at the proper times by means not shown herein. 7

I Any suitable means may .beemployed for opening and closing the gripperson the impression cylinder at the proper times ing andtransferring their sheets. In the i .he usual sheet feed stops 27, 28,29, 30 are provided for the sheet feed tables 21, 22, 23,- W V 24 respectively, which sheet feed stops may for takg the bed and cylinder.

present instance on one side of the bed I provide a cam 33 for closing the grippers 17 to take its sheet from the upper right hand feeder 21; a cam 34 for opening the grippers 17 to permit the transfer of the sheet to the right hand delivery a cam 35 for closing the grippers 18 to take its sheet fromthe lower left handfeeder 23, and a cam 36 for opening the grippers 18 to permit the transfer of the sheet to the right hand delivery.

Similarly, I provide on the otherside of the bed a cam 37 for closing the grippers 19 to take its sheet from the upper left hand feeder 22, a cam 38 for opening the grippers 19 to transfer the printed sheetto the left hand delivery 26; a cam 39 for closing the grippers 20 to take its sheet fromthe lower right hand feeder 24, and a cam 40' for opening the grippers20-to transfer the sheet to the left hand delivery 26.

These cams 33 to 40 inclusive are illustrated in Figs. 12 to 17 inclusive. As all of the gripper tumbler actuating devices are the same, one only has been illustrated in Figs. 2

; and 3, vi'z., the device for opening the grippers 17. The tumbler actuating pin 42 is slidable into the path of the tumbler cam 41 for the grippers 17 at the proper time, to close the grippers 17 on the sheet fed from the upper right hand feeder 21. This pin is held yieldingly out of the path of the cam by the spring 43. The pin operating rock lever is pivoted at 44 to the main frame and it has one arm 45 which engages the pin to move it laterally into the path of the tumbler cam 41 and another arm 46 arranged in position to ride over the yielding cam 33 as the'bed moves to the right and under the cam as the bed moves to the left.

' From the above description it will'be seen that I have provided means whereby two sheets may be taken, printed and delivered on each stroke of the impression cylinder and bed, certain of the sheets being taken from i the two oppositely disposed upper feeders and the others'of the sheets being taken from the two oppositely disposed lower feeders, the sheets taken and printed on one stroke of the cylinder being transferred to one delivery and the sheets taken and printed on the other stroke of the cylinder being transferred to the opposite delivery. This arrangement permits a maximum product to be fed, printed and delivered with a minimum movement of Furthermore, bythe provision of two inking mechanisms having their distributing and form rollers "driven continuously in one direction only, the proper application of the'ink to the forms on each strokeof the bed is ensured. 7

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts withoutdeparting from the spirit and scope of my invention, and hence I do not intend to be limited to the particular embodiment herein shown and described, but

lVhat I'claimis: r 1. In a bed and cylinder printing press,'a reciprocating'bed, an oscillating impression cylinder operable, on each stroke, to success ively take,'print and deliver two sheets, and two inking mechanisms, one'operable on one stroke and the other operable on the opposite stroke ofthe bed.

3. In a bed and cylinder printing press, a

reciprocating form bed, an oscillating impression cylinder operable, on each stroke, to successively take, print and deliver two sheets, and foursh'eet feeders, two arranged to'feed 2. Ina bed and cylinder printingpress, a

ranged to feed sheets from opposite directions 7 to the under sideof thei npression'cylinder.

l. In a bed and cylinder printing press, a reciprocating form bed, an" oscillating impression cylinder operable, on each stroke, to successively take, print and deliver two sheets, four sheet feeders, twoarrange'dto feed sheets from opposite directions to the upper side of the impression cylinder andtwo arranged to feed sheets from opposite directions to-the under side of the impression cylinder,'and two deliveries arranged to take their printed cylinder in opposite directions.

. 5. In a'bed and cylinderprinting press, a reciprocating bed bearing two-forms, an oscillating impression cylinder having two impression surfaces and operable, on each stroke, to successively take, printand deliver two sheets, two inking mechanisms, one operableto inkboth forms on one stroke'and the other to'ink both forms on the opposite stroke of the bed, andfour sheet feeders, two arranged to feed sheets from opposite directions to the upper side of the'impression cylinder and two arranged'to feed sheets from sheets fromthe upper side of the impression 1'05 opposite directions to the under" side of the impression cylinder n 6. Ina bedand cylinder printing press, a reciprocating bed bearing two forms, an oscil lating impression cylinder havingrtwo impression surfaces and operable, on" each stroke,jto successively take, print and deliver two sheets, two inking mechanisms, oneoperabl-e toink both forms on onestroke and the other to'ink bothforms' on the opposite stroke of the bed,'four she'e'tfeders, two

arrangedto feed sheets from opposite directions to the upper side of the impression cylsheets from opposite directions to' the upper PP side of the impression cylinder and two ar- 'in'der and two arranged to feed'sheets from opposite directions to the under side of the impression cylinder, and two deliveries arranged to take their printed sheets from the upper side of the impression cylinder in opposite directions. V I

7 In abed. and" cylinder printing press, a

reciprocating'form bed, an oscillating im-' pression cylinder operable, on each stroke, to

successively take, print and deliver two sheets, and meansforfeeding the first and second sheets of each'stroke fromopposite sides of the cylinder; i

' 8; In a bed and cylinder printing-press, a

reciprocating :form bed, an oscillating impression cylinder operable, on each. stroke, to successively take, print and deliver two sheets, and means for feeding the first and second sheets ofeachistroke from opposite sides of the, cylinder to the upper and under sides respectivelyof the cylinder.

: 9. Ina bed and cylinder printing press, a reciprocatin form bed, an oscillatingim pression cylinder operable, I on each I stroke,

to successively take, print and; deliver two sheets, meansfor feedingthe first and second sheets of each strokefrom opposite sides of the cylinder, and two deliverles, one for tak-' ing the two successively printed sheets on one stroke and the other for taking the two successively printed sheets on the opposite stroke of the .cylinder. r r r 10. In abed andcylinder printing press, areciprocatin form bed, an oscillating imfpression cylin der operable, on each stroke, "tosuccessive'lyi take, print and deliver two sheets, means for feeding the first and second sheets of each'stroke from opposite sides of the cylinder to the upper and under sidesrespectively of the cylinder, and two deliveries, one for taking the two successively printed sheets from the upper side of the cyl inder in one direction on one stroke and the other for taking the two successively printed sheets from the upper side of the cylinder in the opposite direction on the opposite stroke. 11. Ina bed and cylinderprinting press,

a reciprocating form bed, and an oscillating impression cylinder arranged to oscillate substantially two revolutions in each'direction, said cylinder being operable on each" stroke to successively take, print and de- 7 liver two'sheets,

12.- In a bed and cylinder printing press, a reciprocating bed bearing two forms, and an oscillating impression cylinder having two impression surfaces, said cylinder being arranged to oscillate substantially two revolutionsin each directioniand'operable, on each stroke, to successively take, print and deliver two sheets. 5 I r 13. -In a bed and cylinder printing press,

a r'eciprocatingbed bearing two forms, an ,OSCIllQtHIg mpression cyllnder hav ngtwo impression surfaces, said cylinder being arsite stroke of the bed.

ranged to oscillate substantially two revolutions ineach direction and operable, on each stroke, to successively-take, print and de-v liver two sheets,and two inking mechanisms, one operable to ink both forms. on onestroke and'the other to ink both forms on the oppo- 1ft; In a bed and cylinder printing press, a reciprocating bed bearing two forms,-an oscillating impression cylinder having two impression surfaces, said cylinder being arranged to oscillate substantially two revolutions in each direction and operableion each stroke to successively take, print, and deliver two sheets, means forcrfeeding the first sheet on each stroke from onezside of the cylinder, and-means for feeding the second sheet on the same stroke from the opposite side.

V '15. In a bed and cylinder printing press, a reciprocating bed bearing two forms, an oscillating impression cylinder having two impression surfaces,said cylinder being arranged to' oscillate substantially two revolutions in each direction. and operable on each stroke to successively take, print and deliver two sheets, means for feeding the first tions in each direction and operable, on each stroke, to successively 'take,print and" deliver two sheets, means for feeding thefirst sheet on each stroke from one'side of the cylinder, means for feeding the second-sheet on the same stroke from the opposite side, and two deliveries,- one for taking the two successively printed sheets on one stroke and the other for taking the two successively printed'sheets on the opposite stroke of'the cylinder,

V 17 In a bed and cylinder printing press, a

reciprocating bed bearing two forms, an oscillating impression cylinder having two im'-' pression surfaces, said cylinder being arranged to oscillate substantially two revolu tions in'each direction 'an-d operable on each stroke to successively take, print anddeliver two sheets, means for feeding the first sheet on, each stroke from one side of the cylinder to its upper side, means for feeding the sea 0nd sheet on the same stroke from the opposite j side to the under side of thecylinder, and two deliveries, one for taking the two successively printed sheets on one stroke and the other for taking the two successively printed sheets on the opposite stroke of the cylinder. .7

18. In a bed and cylinder printingpress, a

reciprocating form bed, an oscillating in1-' pression cylinder, two pairs of opposed sheet feeders, and a pair of opposed deliveries, all

coacting to feed, print and deliver two sheets on each stroke of the impression cylinder.

19. In a bed and cylinder printing press, a reciprocating form bed, two opposed inking mechanisms therefor, an oscillating impress sion cylinder, two pairs of opposed sheet feeders, and a pair of opposed deliveries, all coacting to feed, print and deliver two sheets on each stroke of the impression cylinder.

20. In a bed and cylinder printing press, a reciprocating form bed, an oscillating impression cylinder, upper and lower pairs of opposed sheet feeders, and an intermediate pan of opposed deliveries, all coacting to feed, print and deliver two sheets on each stroke of the impression cylinder.

7 21. In a bed and cylinder printing press,

a reciprocating form bed, two opposed inking mechanisms therefor, an oscillating impression cylinder, upper and lower pairs of opposed sheet feeders, and an intermediate pair of opposed deliveries, all coacting to feed, print and deliver two sheets on each stroke of the impression cylinder.

22. In a bed and cylinder printing press, a reciprocating form bed bearing two forms,

an oscillating cylinder having two impression surfaces, said cylinder being operable to take, print and deliver two sheets in substantially two revolutions of the cylinder in each direction, two inking mechanisms, each having its form cylinders continuously driven in one direction, and means for bringing one'inking mechanism into position to ink both forms on one stroke of the bed and the other inking mechanism into position to ink both formson the opposite stroke of the bed.

In testimony, that I claim the foregoing as my invention, I have signed my name this 8th day of May, A. D. 1931.

CALVERT B. COTTRELL, 3D. 

